Modeling, simulation and optimization in logistics

Modeling, simulation and optimization in logistics

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Article ID: iaor201113445
Volume: 9
Issue: 4
Start Page Number: 433
End Page Number: 436
Publication Date: Dec 2011
Journal: 4OR
Authors:
Keywords: combinatorial optimization, optimization, programming: mathematical, stochastic processes, simulation, simulation: applications, allocation: resources, management, programming: integer
Abstract:

This text summarizes the PhD thesis defended by the author in March 2009 under the supervision of Pasquale Legato at the University of Calabria, Italy. The thesis is written in English and is available for download at the following URL: http://www.trunfio.it/download/thesis.pdf . It aims to explore friendly Operations Research tools for modeling and simulation of logistics processes, with particular interest for mathematical programming models combined with stochastic simulation tools. In particular key assignment and scheduling problems that arise in maritime container terminals are explored. Initially it is presented a study on different modeling paradigms devoted to the representation of logistical processes and the formalization of problems with complex scheduling/assignment constraints. Successively an IP model for managing the assignment of a pool of rail‐mounted gantry cranes to berthed vessels is proposed. Then, according to a functional integration approach, a second model centered on the intra‐ship scheduling of vessel container bulks to the assigned cranes is further formulated. Finally a simulation‐based optimization approach is investigated and the effectiveness of recent search methods is evaluated by comparison with a commercial solver.

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